Textile machine

ABSTRACT

A textile machine having a plurality of spinning devices, more particularly air-jet spinning devices, which spinning devices have an inlet opening for a fiber band to be spun, and to a spinning hood for a spinning device of a textile machine. In order to provide a textile machine comprising a plurality of spinning devices, which have an inlet opening for a fiber band to be spun and in the case of which the feeding of contaminants into the inlet opening is prevented as much as possible, there is provision for a spinning hood to be provided, which is designed in such a way that the spinning hood separates a spinning space around an inlet opening of the spinning device from the surroundings.

CROSS-REFERENCE TO RELATED APPLICATION

This application claims priority from German National Patent Application No. DE 10 2019 116 278.5, filed Jun. 14, 2019, entitled “Textilmaschine”, the entire contents of which are incorporated herein by reference.

FIELD OF THE INVENTION

The present invention relates to a textile machine having a plurality of spinning devices, more particularly air-jet spinning devices, which spinning devices have an inlet opening for a fiber band to be spun, and to a spinning hood for a spinning device of a textile machine.

BACKGROUND OF THE INVENTION

In order to produce a yarn, textile machines of the type mentioned above have a plurality of spinning devices, to which a fiber material is fed, a yarn being produced by means of the spinning device from the fiber material fed to the spinning device, which yarn exits the spinning device via an outlet, where the yarn is wound onto a tube by means of a winding device.

The spinning devices of textile machines of the type in question can be designed, for example, as air spinning machines, in which a yarn is produced from a strand-shaped fiber material (e.g., a fiber band) by means of a vortex air flow produced within a vortex chamber by air nozzles. For this purpose, a strand-shaped fiber material is conveyed toward an inlet opening of a spinning nozzle by means of a delivery device, which is preferably formed by an output roller pair of a drafting system, said output roller pair being arranged upstream of the spinning nozzle in the spinning direction, and said fiber material is suctioned or sucked in by the spinning nozzle by means of vacuum. Finally, the fiber material enters the interior of the spinning nozzle and, there, enters the area of an inlet mouth of a spindle-shaped yarn-forming element.

Contamination-free feeding of the fiber material into the inlet opening of the spinning device, more particularly an air spinning machine, is essential in order to obtain high-quality yarn, more particularly air-spun yarn. Contaminants in the surroundings of the inlet opening, such as trash particles, paraffins, oils or the like, can be conveyed unhindered into the inlet opening together with the fiber material and negatively affect the yarn quality.

SUMMARY OF THE INVENTION

Proceeding from here, the problem addressed by the present invention is that of providing a textile machine having a plurality of spinning devices, which have an inlet opening for a fiber band to be spun and in the case of which the feeding of contaminants into the inlet opening is prevented as much as possible.

The present invention solves the problem by a textile machine comprised of a plurality of spinning devices which spinning devices have an inlet opening for a fiber band to be spun, characterized by a spinning hood, which is designed in such a way that the spinning hood separates a spinning space around an inlet opening of the spinning device from the surroundings.

The present invention solves the problem by a spinning hood for a spinning device of a textile machine, characterized by a hood basic body and a locking element, which can be moved between a locking position and a removal position and is designed in such a way that the locking element locks the spinning hood on the spinning device in the locking position

Advantageous further developments of the textile machine are set forth herein. The spinning hood can be locked on the spinning device in an operating position. The spinning hood has a locking element, which can be moved, more particularly pivoted, relative to a hood basic body between a locking position and a removal position and is in engagement with the spinning device in the locking position. The spinning hood comprises a rotary joint, by means of which the hood basic body can be pivoted between a locking position and an open position, the open position defining a position of the hood basic body lying between the locking position and the removal position. The rotary joint is formed from a detent recess and a complementary detent bolt, which can be brought into engagement with the detent recess, the detent recess being rotatable about the detent bolt in the engaged state.

An advantageous further developments of the spinning hood are set forth herein. The locking element is arranged on the basic body in such a way that an access opening to a hood interior is opened in the removal position. The locking element can be locked on the hood basic body in the locking position, more particularly the locking element has a detent body, which can be releasably brought into engagement with a detent mark on the hood basic body in the locking position.

The textile machine according to the present invention is characterized by a spinning hood, which separates a spinning space around the inlet opening from the surroundings. The spinning hood is a cover that encloses an area around the inlet opening and that can be releasably arranged on the spinning device in the area of the inlet opening in such a way that a space separated from the surroundings of the spinning device is provided together with the components of the spinning device that are adjacent to the spinning hood, said space having an entrance opening for the fiber band to be fed to the inlet opening of the spinning device. The spinning hood separates the surroundings of the spinning device from the spinning space and thus prevents contaminants from the environment from entering the spinning space. The spinning hood can also prevent the spread of fire if, for this purpose, the spinning hood is made of a fireproof material.

The spinning hood can be designed, for example, as a box-shaped housing having an opening, the contour of the edge that surrounds the opening being matched to the contour of the spinning device and the components of the spinning device when the spinning hood is in its installed position on the spinning device, so that it is ensured that there is contact with the spinning device all around.

In principle, the spinning hood can be positionally secured on the spinning device in any way, for example by means of suitable fastening screws. However, according to an advantageous further development of the present invention, there is provision for the spinning hood to be locked on the spinning device in an operating position. Fixing of the spinning hood on the spinning device ensures that the spinning hood is particularly well aligned relative to the inlet opening. Furthermore, additional fastening elements on the spinning device are not required, and therefore the spinning device does not have to be adapted in order that the spinning hood can be used.

In principle, the design of the releasable locking of the spinning hood on the spinning device can be freely chosen. However, according to a particularly advantageous embodiment of the present invention, there is provision for the spinning hood to have a locking element, which can be moved, more particularly pivoted, relative to a hood basic body between a locking position and a removal position and for the spinning hood to be in engagement with the spinning device in the locking position.

According to this embodiment of the present invention, the locking element can be moved between a locking position, in which the locking element locks the spinning hood on the spinning device, and a removal position, in which the locking element is disengaged from the spinning device and the spinning hood can be detached from the spinning device or positioned on the spinning device.

In the locking position, the locking element effects a particularly reliable positionally secure arrangement of the spinning hood on the spinning device. For this purpose, the locking element is preferably designed in such a way that the locking element establishes a non-positive and/or positive connection between the spinning hood and the spinning device in the locking position. Thus, tools are not needed to fasten the spinning hood to the spinning device.

The locking element can also be designed in such a way that, in the locking position, the locking element forms a housing section of the spinning hood, which housing section delimits the spinning space. This makes separate locking elements on the spinning hood unnecessary. Furthermore, after the locking element designed as a housing section has been moved, more particularly pivoted, relative to the hood basic body into the unlocking position, access to the spinning space is provided, which access allows any required maintenance and inspection work within the spinning space to be performed without completely removing the spinning hood.

In principle, the locking element can be designed to connect to any components of the spinning device. However, according to an advantageous further development of the present invention, there is provision for the locking element to be designed to fix the spinning hood on a drafting system of the spinning device, more particularly a supporting frame of a drafting system.

Fixing the spinning hood on the drafting system, more particularly the supporting frame of the drafting system, ensures particularly good alignment of the spinning hood relative to the inlet opening and to the fiber band fed from the drafting system. Disruptions to operations caused by an incorrectly aligned spinning hood can thus be particularly reliably avoided.

In principle, the advantageously provided locking element can be positionally secured on the hood basic body in the locking position in any way. However, according to an advantageous embodiment of the present invention, there is provision for the locking element to be releasably locked on the hood basic body, more particularly for the locking element to have a detent body, which can be releasably brought into engagement with a detent mark on the hood basic body in the locking position.

According to this embodiment of the present invention, the locking element is locked on the hood basic body in the locking position, the locking particularly advantageously being realized by a connection by means of a detent body, which engages in a detent mark in the locking position. This can be spring-loaded or elastically movable detent bodies that are arranged on the locking element and that engage in corresponding detent marks on the hood basic body in the locking position. Unlocking can be effected by directly actuating the detent bodies. Alternatively, the connection between the detent body and the detent mark can be designed in such a way that, when a defined force is applied to the locking element, the detent bodies are moved out of the detent marks.

The spinning hood according to the present invention for a spinning device of a textile machine, more particularly a textile machine according to one or more of the embodiments described above, is characterized by a hood basic body and a locking element, which can be moved, more particularly pivoted, between a locking position and a removal position and is designed in such a way that the locking element locks the spinning hood on the spinning device in the locking position.

In the locking position, the hood basic body and the locking element form a closed-off spinning hood having an entrance opening for the fiber band to be fed to the entry opening of the spinning device. The spinning hood, in its installed position on the spinning device, separates, together with the components of the spinning device that are adjacent to the spinning hood, a spinning space around the inlet opening from the surroundings as much as possible so that the ingress of contaminants into the inlet opening is prevented as much as possible.

The locking element engages with the spinning device, e.g. a housing portion, in the locking position in such a way that the spinning hood is non-positively and/or positively locked on the spinning device, so that additional fastening elements are not required.

The hood basic body and the locking element are particularly advantageously made of a fireproof material, by means of which the spread of fire in the area of the inlet opening can be prevented.

In principle, the design of the connection between the locking element and the hood basic body can be freely selected. However, according to a further development of the present invention, there is provision for the locking element to be arranged on the basic body in such a way that an access opening to a hood interior is opened in the removal position. This design allows the spinning space to be inspected and any maintenance work to be performed without removing the spinning hood.

In principle, the locking element can be positionally secured in the locking position in any way. However, according to a further development of the present invention, there is provision for the locking element to be locked on the hood basic body in the locking position, more particularly for the locking element to have a detent body, which can be releasably brought into engagement with a detent mark on the hood basic body in the locking position.

Between the locking position and the removal position, an open position of the locking element is preferably provided, between which positions the locking element can be pivoted. According to a preferred embodiment, the spinning hood has a rotary joint for this purpose. The open position allows the locking element to be easily released from the locking position by applying a pressure to a suitable point of the locking element, the locking element being easily pivotable in such a way that an upper edge section is accessibly open and can act as a gripping element for bringing the locking element from the open position into the removal position. The rotary joint is particularly preferably formed from a detent recess and a complementary detent bolt, which can be brought into engagement with the detent recess, the detent recess being rotatable about the detent bolt in the engaged state. A rotary joint of this type has a simple designed and can be economically realized. The detent recess can be arranged either on the locking element or on the hood basic body, the detent bolt being arranged on the other component accordingly.

The design of the present invention in accordance with one of the preferred embodiments is a particularly simple, economical and reliable option for detachably arresting the locking element on the hood basic body. The actuation force required for unlocking can be defined in a particularly simple way by the selection of the preferably provided detent body. This actuation force can be produced directly on the detent body or by means of a sufficient actuation pressure applied to the locking element at a suitable point, as a result of which actuation pressure the locking element is preferably pivoted into the unlocking position.

Further areas of applicability of the present invention will become apparent from the detailed description provided hereinafter. It should be understood that the detailed description and specific examples, while indicating the preferred embodiments of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.

BRIEF DESCRIPTION OF THE DRAWINGS

An embodiment example of the present invention is explained below with reference to several figures. In the drawings:

FIG. 1 is a perspective view of a spinning device of a textile machine with a spinning hood;

FIG. 2 is a perspective illustration of the spinning hood in an operating position and

FIG. 3 is a perspective illustration of the spinning hood of FIG. 2 in a removal position.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

The following description of the embodiments of the present invention is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. The following description is provided herein solely by way of example for purposes of providing an enabling disclosure of the invention, but does not limit the scope or substance of the invention.

In FIG. 1, a spinning device 11 having a spinning unit of a textile machine is illustrated, which spinning unit is designed as an air-jet spinning unit 1 (the textile machine is not shown here). A strand-shaped fiber material (not shown here) is conveyed toward an inlet opening of a spinning nozzle by means of an output roller pair of a drafting system 3 of the spinning device 11, said output roller pair being arranged upstream of a spinning nozzle of the air-jet spinning unit 1 in the spinning direction, and said fiber material is suctioned or sucked in by the spinning nozzle by means of vacuum.

A spinning hood 2 of the spinning device 11 in an operating position is arranged in the area between the drafting system 3 and the air-jet spinning unit 1. The spinning hood 2 separates a spinning space around the inlet opening from the surroundings, the spinning hood 2 lying against the drafting system 3 and the air-jet spinning unit 1 all around for this purpose, without impeding the feeding of the fiber band from the drafting system 3 into the inlet opening.

The spinning hood 2, which is shown in the operating position in FIG. 2 and in a removal position in FIG. 3, has a hood basic body 4 and a flap-shaped locking element 5, which is pivotably connected to the hood basic body 4. In the operating position of the spinning hood 2, the locking element 5 is arranged in its locking position, in which the locking element 5 forms a closed-off hood together with the hood basic body 4. In the locking position, arresting elements 6 a, 6 b on the locking element 5 are in engagement with corresponding sections on the air-jet spinning unit 1 and the drafting system 3 and thus lock the spinning hood 2 in the operating position on the air-jet spinning unit 1, an indentation 9 on the locking element 5 ensuring unhindered feeding of the fiber band into the air-jet spinning unit 1.

In order to remove the spinning hood 2 from and install the spinning hood 2 on the spinning device 11, the locking element 5 can be brought from its locking position shown in FIG. 2 into its removal position shown in FIG. 3, relative to the hood basic body 4, via an intermediate open position. In the removal position, the arresting elements 6 a, 6 b are disengaged from the spinning device 11 so that the spinning hood 2 can be removed and installed. Furthermore, the locking element 5 opens access to the spinning space, via which maintenance and inspection work can be performed. In the open position between the locking position and the removal position, the locking element 5 is still pivotably coupled to the hood basic body 4 by means of a rotary joint. In this preferred embodiment example, the rotary joint is formed by a semicircular detent recess 12 and a complementary detent bolt (not visible), the detent recess 12 (as shown in FIG. 3) being arranged laterally on the locking element 5 such that the detent recess 12 protrudes toward the hood basic body 4 and the associated detent pin being arranged on a corresponding inner face of the hood basic body 4. In the detent-connected state, the locking element 5 can be pivoted about the detent bolt in order to pivot the locking element 5 between the locking position and the open position.

In order to positionally secure the locking element 5 on the hood basic body 4 in the locking position of the locking element 5, detent bodies 8 in the form of round protrusions are arranged on tabs 11 protruding from a rear side of the locking element 5. In the locking position, the detent bodies 8 are arranged in correspondingly designed detent marks 7 on the hood basic body 4 and thus secure the locking position of the locking element 5.

In order to move the locking element 5 from the locking position into the removal position, the detent bodies 8 can be actuated on the outside so that the tabs 10 are elastically bent and the detent bodies 8 exit from the detent marks 7. Alternatively, a pressure sufficient for moving the detent bodies 8 out of the detent marks 7 can be applied to a suitable point on the locking element 5.

LIST OF REFERENCE SIGNS

-   -   1 Air-jet spinning unit     -   2 Spinning hood     -   3 Drafting system     -   4 Hood basic body     -   5 Locking element     -   6 a Arresting element     -   6 b Arresting element     -   7 Detent mark     -   8 Detent body     -   9 Indentation     -   10 Tab     -   11 Spinning device     -   12 Detent recess

It will therefore be readily understood by those persons skilled in the art that the present invention is susceptible of broad utility and application. Many embodiments and adaptations of the present invention other than those herein described, as well as many variations, modifications and equivalent arrangements, will be apparent from or reasonably suggested by the present invention and the foregoing description thereof, without departing from the substance or scope of the present invention. Accordingly, while the present invention has been described herein in detail in relation to its preferred embodiment, it is to be understood that this disclosure is only illustrative and exemplary of the present invention and is made merely for purposes of providing a full and enabling disclosure of the invention. The foregoing disclosure is not intended or to be construed to limit the present invention or otherwise to exclude any such other embodiments, adaptations, variations, modifications and equivalent arrangements. 

What is claimed is:
 1. A textile machine comprising a plurality of spinning devices which spinning devices have an inlet opening for a fiber band to be spun, characterized by a spinning hood, which is designed in such a way that the spinning hood separates a spinning space around an inlet opening of the spinning device from the surroundings.
 2. The textile machine according to claim 1, characterized in that spinning devices are air-jet spinning devices.
 3. The textile machine according to claim 1, characterized in that the spinning hood is locked on the spinning device in an operating position.
 4. The textile machine according to claim 1, characterized in that the spinning hood has a locking element, which can be moved relative to a hood basic body between a locking position and a removal position and is in engagement with the spinning device in the locking position.
 5. The textile machine according to claim 1, characterized in that the spinning hood has a locking element, which can be pivoted relative to a hood basic body between a locking position and a removal position and is in engagement with the spinning device in the locking position.
 6. The textile machine according to claim 4, characterized in that the spinning hood comprises a rotary joint, by which the hood basic body can be pivoted between a locking position and an open position, the open position defining a position of the hood basic body lying between the locking position and the removal position.
 7. The textile machine according to claim 6, characterized in that the rotary joint is formed from a detent recess and a complementary detent bolt, which can be brought into engagement with the detent recess, the detent recess being rotatable about the detent bolt in the engaged state.
 8. The textile machine according to claim 1, characterized in that the locking element is designed to fix the spinning hood on a drafting system.
 9. The textile machine according to claim 8, characterized in that the locking element is designed to fix the spinning hood on a supporting frame of the drafting system.
 10. The textile machine according to claim 1, characterized in that the locking element can be releasably locked on the hood basic body, which can be releasably brought into engagement with a detent mark on the hood basic body in the locking position.
 11. The textile machine according to claim 10, characterized in that the locking element has a detent body.
 12. A spinning hood for a spinning device of a textile machine according to claim 1, characterized by a hood basic body and a locking element, which can be moved between a locking position and a removal position and is designed in such a way that the locking element locks the spinning hood on the spinning device in the locking position.
 13. The spinning hood according to claim 12, characterized by a hood basic body and a locking element, which can be pivoted between a locking position and a removal position and is designed in such a way that the locking element locks the spinning hood on the spinning device in the locking position.
 14. The spinning hood according to claim 12, characterized in that the locking element is arranged on the basic body in such a way that an access opening to a hood interior is opened in the removal position.
 15. The spinning hood according to claim 12, characterized in that the locking element can be locked on the hood basic body in the locking position which can be releasably brought into engagement with a detent mark on the hood basic body in the locking position.
 16. The spinning hood according to claim 15, characterized in that the locking element has a detent body. 